package _2Session;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

@WebServlet("/SetSessionServlet")
public class SetSessionServlet extends HttpServlet {
	@Override
	protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		resp.setContentType("text/html;charset=utf-8");
		PrintWriter pw = resp.getWriter();
		
		
		// 1. 得到会话信息
		HttpSession session = req.getSession();
		
		// 2. 存入信息
		String username= req.getParameter("username");
		session.setAttribute("username", username);
		
//		session.removeAttribute("username");
		// 让session失效
//		session.invalidate();
		
		// 3. 设置会话有效期 (默认有效期是30分钟 1800)
		session.setMaxInactiveInterval(10);
		
		
		
		pw.print("存入Session");
		
		
		
		
	}

	@Override
	protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
		doGet(req, resp);
	}
}